U.S. President-elect Donald Trump's nominee for secretary of state says Washington should consider actions to compel China to implement international sanctions against North Korea. Rex Tillerson made the comment during his Senate confirmation hearing on Wednesday, where he strongly criticized Beijing for making "empty promises" to put pressure on Pyongyang. The former Exxon Mobile CEO said tolerance of China's failure to implement sanctions... was an example of a broader failure in Washington's foreign policy.Tillerson blamed the U.S. for sending a mixed message in the case of North Korea and expectations of China,... adding that a new approach with North Korea's closest ally was needed.